Waveguide window for waveguide switch redundancy protection

Abstract

The invention discloses a waveguide window for waveguide switch redundancy protection. The waveguide window comprises a guide stator, a film, a rubber pad and a pressing sheet, a cylindrical inner cavity is formed in the center of the guide stator, waveguide ports are formed in the centers of the four side faces of the guide stator respectively, and the waveguide ports are communicated with the cylindrical inner cavity; the thin film covers the outer side of the waveguide port; and the film is fixed on the guide stator by the pressing sheet through the rubber pad, and the film is leveled. Redundant substances can be effectively prevented from entering the guide cavity, assembly is flexible and detachable, debugging is convenient, and the reliability of film fixing is high.

Description

Technical Field

[0001] The invention belongs to the technical field of waveguide switches, and in particular relates to a waveguide window for protecting redundant objects of waveguide switches. Background Art

[0002] Waveguide switches transmit microwave signals through a waveguide rectangular cavity structure. Unwanted matter can enter the switch through the waveguide port, causing sticking and micro-discharge. To prevent unwanted matter from entering the waveguide rectangular cavity channel, a waveguide window is usually added to the waveguide rectangular cavity channel port.

[0003] The guide stator of a waveguide switch is generally a cubic structure, that is, the four faces of the cubic body are equipped with waveguide rectangular cavity microwave channels. The traditional waveguide window structure is a square frame press to press the film into the installation groove of the guide stator, and then apply glue to fix it. This structure cannot ensure the effective bonding between the square frame press and the film and is non-detachable. During the assembly process, when the glue is not solidified, the waveguide window assembly work on other waveguide rectangular cavity surfaces cannot be carried out, and the assembly efficiency is low. At the same time, the traditional waveguide window is attached to the end face of the waveguide switch guide stator by gravity and glue, which makes the reliability of the operation process low. In order to improve the assembly efficiency, reliability and flexibility of the waveguide window of the waveguide switch, it is urgently necessary to propose a waveguide window for protecting the redundant objects of the waveguide switch. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects and provide a waveguide window for protecting the redundant objects of waveguide switches, which solves the technical problems of low reliability and low assembly efficiency in the operation process of traditional waveguide windows. The present invention can effectively prevent the redundant objects from entering the guide cavity, and the assembly is flexible and detachable, which is convenient for debugging, and the reliability of film fixing is high.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A waveguide window for protecting redundant objects of a waveguide switch, comprising: a guide stator, a film, a rubber pad and a pressing sheet;

[0007] A cylindrical inner cavity is provided at the center of the guide stator, and waveguide openings are respectively provided at the centers of the four sides of the guide stator, and the waveguide openings are connected to the cylindrical inner cavity;

[0008] The film covers the outside of the waveguide opening;

[0009] The pressing sheet fixes the film on the guiding stator through the rubber pad and flattens the film.

[0010] Furthermore, the side surface of the guiding stator is the end surface of the flange;

[0011] The flange end surface is provided with an installation recessed groove for installing the pressing sheet, and a rectangular recessed groove is provided inside the installation recessed groove for installing the film;

[0012] The centers of the flange end face, the mounting groove and the rectangular groove are consistent.

[0013] Furthermore, the installation sink is an I-shaped structure, threaded holes are respectively provided at the four corners of the I-shaped structure, and first positioning pin holes are respectively provided at two diagonal positions;

[0014] The pressing sheet is an I-shaped structure matching the shape of the mounting sink groove, including a rectangular frame and four mounting ears connected to the outer sides of the long sides of the rectangular frame, and the four mounting ears are respectively provided with countersunk mounting holes, and two diagonal mounting ears are provided with second positioning pin holes;

[0015] The positions of the four threaded holes and the four countersunk mounting holes correspond to each other, and the positions of the two first locating pin holes and the two second locating pin holes correspond to each other;

[0016] After the screws are matched with the threaded holes and the countersunk mounting holes, and the locating pins are matched with the first locating pin holes and the second locating pin holes, the pressing sheet and the guiding stator are fixedly connected.

[0017] Furthermore, the size of the cross section inside the rectangular frame of the pressed sheet is the same as the size of the waveguide opening.

[0018] Further, the rubber pad is a rectangular frame structure;

[0019] The inner side of the rectangular frame structure is chamfered, and the cross section of the rubber pad is trapezoidal;

[0020] A rubber pad groove is arranged along one circumference of the rectangular frame of the pressing sheet. The rubber pad groove is used to install the rubber pad, and the cross-sectional shape of the rubber pad groove matches the cross-sectional shape of the rubber pad.

[0021] Furthermore, when the screw cooperates with the threaded hole and the countersunk mounting hole, the pressing sheet presses the rubber pad, and the rubber pad stretches outward, pressing the film around the guide stator and flattening the film.

[0022] Furthermore, when the pressing sheet does not press the rubber pad, the rubber pad is 0.04 to 0.06 mm higher than the end surface of the rubber pad groove; when the pressing sheet presses the rubber pad, the rubber pad is flush with the end surface of the rubber pad groove.

[0023] Further, the two inner side surfaces of the rubber pad groove are respectively recorded as a first inner side surface and a second inner side surface, wherein the first inner side surface is provided with a chamfer matching the inner side surface of the rubber pad, and the second inner side surface is a plane without a chamfer;

[0024] When the pressing sheet does not press the rubber pad, the inner side of the rubber pad is tightly attached to the first inner side of the rubber pad groove, and a gap of 0.04 to 0.06 mm is left between the outer side of the rubber pad and the second inner side of the rubber pad groove. When the pressing sheet presses the rubber pad, the inner side of the rubber pad is tightly attached to the first inner side of the rubber pad groove, and the outer side of the rubber pad is tightly attached to the second inner side of the rubber pad groove.

[0025] Furthermore, the film is rectangular, and the four sides of the film are 1 mm to 2 mm larger than the four sides of the waveguide port, and the four sides of the film are 0.02 mm to 0.12 mm smaller than the four sides of the rectangular groove.

[0026] Furthermore, the film is made of polyimide material and has a thickness of 0.03 mm to 0.05 mm.

[0027] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0028] (1) The present invention creatively proposes a waveguide window for protecting redundant materials of a waveguide switch. The film is pressed onto the end face of the waveguide switch cavity through a rubber pad and a pressing sheet. The pressing sheet, the film and the guide stator are tightly fitted, and the reliability is high.

[0029] (2) The waveguide window designed by the present invention is fixed by screws, and is flexible to assemble and disassemble for debugging;

[0030] (3) The waveguide window designed by the present invention has a rubber pad which is conducive to the flattening of the film and can ensure the flatness of the film during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall schematic diagram of a waveguide window for protecting redundant materials of a waveguide switch according to the present invention;

[0032] Figure 2 A schematic diagram of disassembling a waveguide window for protecting redundant materials of a waveguide switch according to the present invention;

[0033] Figure 3 It is a three-dimensional schematic diagram of the guiding stator of the present invention;

[0034] Figure 4 This is a left side view of the guide stator of the present invention;

[0035] Figure 5 is a schematic diagram of the film of the present invention;

[0036] Figure 6 Schematic diagram of the rubber pad of the present invention; (a) is a stereogram, and (b) is a cross-sectional diagram;

[0037] Figure 7 It is a three-dimensional schematic diagram of the tableting of the present invention;

[0038] Figure 8 This is a schematic diagram of the installation hole of the tablet countersunk hole of the present invention;

[0039] Fig. 9 This is a schematic diagram of the rubber pad groove of the tablet press of the present invention;

[0040] Fig.10 A bottom view showing the assembly relationship between the rubber pad and the pressing sheet of the present invention;

[0041] Fig.11 Schematic diagram of the assembly relationship between the rubber pad and the pressing sheet of the present invention; wherein (a) is a cross-sectional view in the II direction of Figure (b), (b) is a main view, and (c) is a partial enlarged view of the A area of ​​Figure (a). DETAILED DESCRIPTION

[0042] The following detailed description of the present invention will make the features and advantages of the present invention more clear and explicit.

[0043] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0044] The present invention provides a waveguide window for protecting the redundant materials of a waveguide switch, comprising a guide stator, a film, a rubber pad, a pressing sheet, and in a specific embodiment, a positioning pin and a screw. The film is installed at the waveguide port of the guide stator, the rubber pad is nested in the pressing sheet, the pressing sheet and the rubber pad are installed on the end face of the waveguide port of the guide stator with the film, the positioning pin positions the pressing sheet, and the screws fasten the pressing sheet, the rubber pad, and the film to the guide stator.

[0045] In a specific embodiment, the side surface of the guide stator is composed of four flange end faces, a cylindrical inner cavity is hollowed out in the middle of the guide stator, and a waveguide opening leading to the cylindrical inner cavity is opened in the center of each flange end face; the four flange end faces are provided with mounting grooves, the mounting grooves are centered on the waveguide opening, the mounting grooves are "I"-shaped structures, the four corners are of the same size and each corner is provided with a threaded hole, and a pair of first positioning pin holes are opened diagonally; the cross-sectional size of the rectangular groove in the center of the mounting groove is 1mm to 2mm larger than the size of the waveguide opening on all sides, and the rectangular groove is used to place the film.

[0046] In a specific embodiment, the film is a rectangular structure, made of polyimide, with a flat surface, no wrinkles or bends, and an area that can cover the waveguide opening, and the four sides extend beyond the edge of the waveguide opening by 1mm to 2mm, and are 0.02mm to 0.12mm smaller than the rectangular sink size on all sides, leaving a gap for installation. The film is relatively thin, with a thickness of 0.03mm to 0.05mm, and is assembled in the rectangular sink at the waveguide opening of the guide stator.

[0047] In a specific implementation, the rubber pad is a rectangular frame structure, the inner side of the frame is provided with a chamfer, and the outer side has no chamfer, and the cross section of the rubber pad itself is a trapezoid.

[0048] In a specific embodiment, the pressing piece is a square frame structure with four mounting ears, two of which are placed on each long side of the square frame, and the mounting ears do not extend beyond the end face of the short side. The mounting ears are provided with a countersunk mounting hole and a second positioning pin hole, and the countersunk mounting hole corresponds to the threaded hole of the mounting groove, and the second positioning pin hole is directly opposite to the first positioning pin hole of the mounting groove. The cross-sectional size of the inner frame of the pressing piece is the same as the size of the waveguide port. The outer side of the square frame structure of the pressing piece is chamfered, and the chamfered position is used to install a rubber pad, which is called a rubber pad groove. The rubber pad groove should be 0.5mm away from the edge of the inner frame. The rubber pad is installed in the rubber pad groove, and the rubber pad is higher than the height of the pressing piece by L2 (about 0.05mm) to ensure that the rubber pad is flush with the pressing piece when the screw locks the pressing piece. A gap of L1 (about 0.05mm) is left around the rubber pad and between the pressing piece to ensure that when the screw locks the pressing piece, the rubber pad extends and stretches outward to flatten the film.

[0049] Example:

[0050] The present invention provides a waveguide window for protecting a waveguide switch from waste, which can effectively prevent waste from entering the switch through the designed guide stator 1, film 2, rubber pad 3, pressing sheet 4, positioning pin 5 and screw 6. It has the characteristics of simple structure, convenient operation, high reliability, etc., and the structure can be flexibly disassembled and debugged.

[0051] like Figure 1 The figure shows the overall schematic diagram of the waveguide window. Figure 2 This is a schematic diagram of disassembling a waveguide window. As can be seen from the figure, the present invention is a waveguide window for protecting the redundant objects of a waveguide switch, comprising a guide stator 1, a film 2, a rubber pad 3, a pressing sheet 4, a positioning pin 5, and a screw 6. The film 2 is installed at the waveguide port 1-1 of the guide stator 1, the rubber pad 3 is nested in the pressing sheet 4, the pressing sheet 4 together with the rubber pad 3 is installed on the end face of the waveguide port of the guide stator 1 with the film 2, the positioning pin 5 positions the pressing sheet 4, and the screw 6 fastens the pressing sheet 4, the rubber pad 3, and the film 2 to the guide stator 1, forming a waveguide window with the function of protecting the redundant objects.

[0052] The side surface of the guide stator 1 is composed of four flange end surfaces 1-2, and a cylindrical inner cavity 1-3 is hollowed out in the middle of the guide stator 1. Figure 3 and Figure 4 A waveguide opening 1-1 leading to the inner cavity 1-3 of the cylinder is opened in the center of each flange end face 1-2; four flange end faces 1-2 are opened with mounting grooves 1-4, the mounting grooves 1-4 are centered on the waveguide opening 1-1, the mounting grooves 1-4 are "I"-shaped structures, the four corners are of the same size and each corner is provided with a threaded hole 1-5, and a pair of first positioning pin holes 1-6 are opened in the diagonal corners; the cross-sectional size of the rectangular groove 1-7 in the center of the mounting groove 1-4 is 1mm to 2mm larger than the size of the waveguide opening 1-1 on all sides, and the rectangular groove 1-7 is used to place the film 2.

[0053] like Figure 5 The film 2 is a rectangular structure made of polyimide, with a flat surface, no wrinkles or bends, and can cover the waveguide port 1-1. The four sides extend beyond the edge of the waveguide port 1-1 by 1mm to 2mm, and are 0.02mm to 0.12mm smaller than the rectangular sinking groove 1-7 on all sides, leaving a gap for installation. The film 2 is relatively thin, with a thickness of 0.03mm to 0.05mm, and is assembled in the rectangular sinking groove 1-7 at the waveguide port 1-1 of the guide stator 1, so as not to affect the normal transmission of microwave signals.

[0054] like Figure 6 The rubber pad 3 can be placed in the pressing sheet 4. The rubber pad 3 is a rectangular frame structure. The inner side of the frame is provided with a chamfer 3-1, and the outer side has no chamfer. The cross section of the rubber pad itself is a trapezoid.

[0055] like Figure 7 , Figure 8 , Fig. 9 The pressing piece 4 is a square frame structure with four mounting ears 4-1. The mounting ears 4-1 are placed two on each long side of the square frame, and the mounting ears 4-1 do not exceed the short side end face. The mounting ears 4-1 are provided with a countersunk mounting hole 4-2 and a second positioning pin hole 4-3. The countersunk mounting hole 4-2 corresponds to the threaded hole 1-5 of the mounting recess 1-4. The second positioning pin hole 4-3 is directly opposite to the first positioning pin hole 1-6 of the mounting recess 1-4. The cross-sectional size of the inner frame of the pressing piece 4 is the same as that of the waveguide port 1-1. The outer side of the inner end face frame of the pressing piece 4 is chamfered 4-4. The position of the chamfer 4-4 is used to install the rubber pad 3, which is called the rubber pad groove 4-5. The rubber pad groove 4-5 should be 0.5mm away from the inner frame edge 4-6 to avoid the rubber pad 3 being exposed to the outside and affecting the reliability and microwave parameters of the waveguide window. Fig.10 and Fig.11The rubber pad 3 is installed in the rubber pad groove 4-5, and the rubber pad 3 is higher than the pressing sheet 4 by L2 (about 0.05mm), ensuring that the rubber pad 3 is flush with the pressing sheet 4 when the screw 6 locks the pressing sheet 4, and a gap of L1 (about 0.05mm) is left around the rubber pad 3 and the pressing sheet 4, ensuring that when the screw 6 locks the pressing sheet 4, the rubber pad 3 extends and stretches outward to level the film 2.

[0056] The film 2 is fixed on the guide stator 1 through the rubber pad 3 and the pressing plate 4. The rubber pad 3 is sleeved in the pressing plate 4. After assembly, the rubber pad 4 is not exposed to the outside, and the end face of the pressing plate 4 is 0.02 to 0.03 mm lower than the flange end face of the guide stator 1.

[0057] The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, a variety of equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its implementation methods, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

[0058] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A waveguide window for protecting waveguide switch from excess material, characterized in that: include: A guide stator (1), a film (2), a rubber pad (3) and a pressing sheet (4); A cylindrical inner cavity (1-3) is provided at the center of the guiding stator (1), and waveguide openings (1-1) are respectively provided at the centers of the four side surfaces of the guiding stator (1), and the waveguide openings (1-1) are connected to the cylindrical inner cavity (1-3); The film (2) covers the outer side of the waveguide opening (1-1); The pressing sheet (4) fixes the film (2) on the guiding stator (1) via the rubber pad (3) and realizes the flattening of the film (2).

2. A waveguide window for waveguide switch redundant protection according to claim 1, characterized in that: The side surface of the guide stator (1) is a flange end surface (1-2); An installation recessed groove (1-4) for installing a pressing sheet (4) is provided on the flange end surface (1-2), and a rectangular recessed groove (1-7) for installing a film (2) is provided inside the installation recessed groove (1-4); The centers of the flange end surface (1-2), the mounting recessed groove (1-4) and the rectangular recessed groove (1-7) are consistent.

3. A waveguide window for waveguide switch redundant protection according to claim 2, characterized in that: The mounting sink (1-4) is an I-shaped structure, and threaded holes (1-5) are respectively provided at the four corners of the I-shaped structure, wherein first positioning pin holes (1-6) are respectively provided at two diagonal portions; The pressing sheet (4) is an I-shaped structure matching the shape of the mounting sink groove (1-4), comprising a rectangular frame and four mounting ears (4-1) connected to the outer sides of the long sides of the rectangular frame, the four mounting ears (4-1) are respectively provided with countersunk mounting holes (4-2), wherein two diagonal mounting ears (4-1) are provided with second positioning pin holes (4-3); The positions of the four threaded holes (1-5) and the four countersunk mounting holes (4-2) correspond to each other, and the positions of the two first positioning pin holes (1-6) and the two second positioning pin holes (4-3) correspond to each other; After the screw (6) cooperates with the threaded hole (1-5) and the countersunk mounting hole (4-2), and the positioning pin (5) cooperates with the first positioning pin hole (1-6) and the second positioning pin hole (4-3), the pressing sheet (4) and the guiding stator (1) are fixedly connected.

4. A waveguide window for waveguide switch redundant protection according to claim 3, characterized in that: The size of the cross section inside the rectangular frame of the pressing sheet (4) is the same as the size of the waveguide opening (1-1).

5. A waveguide window for waveguide switch redundant protection according to claim 4, characterized in that: The rubber pad (3) is a rectangular frame structure; The inner side surface of the rectangular frame structure is provided with a chamfer, and the cross section of the rubber pad (3) is a trapezoid; A rubber pad groove (4-5) is provided along one circumference of the rectangular frame of the pressing sheet (4), the rubber pad groove (4-5) is used to install the rubber pad (3), and the cross-sectional shape of the rubber pad groove (4-5) matches the cross-sectional shape of the rubber pad (3).

6. A waveguide window for waveguide switch redundant protection according to claim 5, characterized in that: When the screw (6) cooperates with the threaded hole (1-5) and the countersunk mounting hole (4-2), the pressing sheet (4) presses the rubber pad (3), and the rubber pad (3) stretches outward to press the film (2) around the guide stator (1), and the film (2) is flattened.

7. A waveguide window for waveguide switch redundant protection according to claim 6, characterized in that: When the pressing sheet (4) does not press the rubber pad (3), the rubber pad (3) is 0.04 to 0.06 mm higher than the end surface of the notch of the rubber pad groove (4-5); when the pressing sheet (4) presses the rubber pad (3), the rubber pad (3) is flush with the end surface of the notch of the rubber pad groove (4-5).

8. A waveguide window for waveguide switch redundant protection according to claim 6, characterized in that: The two inner side surfaces of the rubber pad groove (4-5) are respectively recorded as a first inner side surface and a second inner side surface, wherein the first inner side surface is provided with a chamfer matching the inner side surface of the rubber pad (3), and the second inner side surface is a plane without a chamfer; When the pressing sheet (4) does not press the rubber pad (3), the inner side surface of the rubber pad (3) is in close contact with the first inner side surface of the rubber pad groove (4-5), and a gap of 0.04 to 0.06 mm is left between the outer side surface of the rubber pad (3) and the second inner side surface of the rubber pad groove (4-5). When the pressing sheet (4) presses the rubber pad (3), the inner side surface of the rubber pad (3) is in close contact with the first inner side surface of the rubber pad groove (4-5), and the outer side surface of the rubber pad (3) is in close contact with the second inner side surface of the rubber pad groove (4-5).

9. A waveguide window for waveguide switch redundant protection according to claim 1, characterized in that: The film (2) is rectangular, and the four sides of the film (2) are 1 mm to 2 mm larger than the four sides of the waveguide port (1-1). At the same time, the four sides of the film (2) are 0.02 mm to 0.12 mm smaller than the four sides of the rectangular sink (1-7).

10. A waveguide window for waveguide switch redundant protection according to claim 1, characterized in that: The film (2) is made of polyimide material and has a thickness of 0.03 mm to 0.05 mm.

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